Mitsubishi Outlander GS45X. Manual - part 1635

DIAGNOSIS

TSB Revision

CVT

23A-97

DTC P1723: Abnormality in Speed Sensor System Function

SECONDARY
PULLEY
SPEED
SENSOR

PRIMARY
PULLEY
SPEED
SENSOR

TRANSAXLE
CONTROL MODULE

RELAY BOX

CVT
CONTROL
RELAY

FUSIBLE
LINK

36

ENGINE
COMPARTMENT

Speed sensor system circuit

AC901226AB

DIAGNOSIS

TSB Revision

CVT

23A-98

.

DIAGNOSTIC FUNCTION

TCM detects the abnormal wave pattern of the speed 
sensor signal.

.

DESCRIPTIONS OF MONITOR METHODS

• Rotational fluctuation of primary pulley is large 

(for 1 second).

• Rotational fluctuation of secondary pulley is large 

(for 1 second).

.

MONITOR EXECUTION

• Continuous

.

MONITOR EXECUTION CONDITIONS 
(OTHER MONITOR AND SENSOR)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• P0741: Abnormality in lockup function

• P0746: Abnormality in hydraulic control system 

function

• P0841: Abnormality in line pressure sensor func-

tion

• P0868: Secondary pressure drop

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.

AC709490

Connectors: A-12, A-13

AC

A-12

A-13

AC709650

Connector: A-18X

AB

AC709493

AF

Connectors: B-124, B-126

B-124 (B)

B-126 (B)

AC703253

Connector: C-37

Brake pedal

AC

DIAGNOSIS

TSB Revision

CVT

23A-99

LOGIC FLOW CHARTS (Monitor Sequence)

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DTC SET CONDITIONS

Check Conditions

• Voltage of battery: 9 volts or more.

• Voltage of battery: 16 volts or less.

JUDGMENT CRITERIA

• Noise of primary pulley or primary pulley speed 

sensor signal: more than 30 r/min. (1 second)

• Noise of primary pulley or secondary pulley 

speed sensor signal: more than 30 r/min. (1 sec-
ond)

.

OBD-II DRIVE CYCLE PATTERN

Ignition switch : ON (start the engine and keep it for 
10 seconds or more)

.

PROBABLE CAUSES

• Malfunction of primary pulley speed sensor

• Malfunction of secondary pulley speed sensor

• Malfunction of TCM

AC802631

START

Yes

Yes

No

Noise of primary
speed sensor > 30 r/min

Noise of primary
speed sensor > 30 r/min

No

Good

Malfunction

END

Yes

No

No

Continuous for 1 sec

Yes

Continuous for 1 sec

DIAGNOSIS

TSB Revision

CVT

23A-100

DIAGNOSTIC PROCEDURE

STEP 1. Check the following connector:

• C-37 TCM connector

• B-126 Primary pulley speed sensor connector

• B-124 Secondary pulley speed sensor connector

Check for the connection with terminals.
Q: Is the check result normal?

YES : Go to Step 2.
NO :  Repair the defective connector.

STEP 2. Use an oscilloscope to measure the wave patterns 
of the primary pulley speed sensor and secondary pulley 
speed sensor.
Refer to 

P.23A-133

.

Q: Is the check result normal?

YES : Go to Step 3.
NO :  Replace the primary pulley speed sensor or 

secondary pulley speed sensor.

STEP 3. Symptom recheck after erasing diagnostic trouble 
code
Q: Is the check result normal?

YES : Intermittent malfunction
NO :  Replace TCM.

DTC P1740: Malfunction of Lockup/Select Switching Solenoid Valve

.

SOLENOID VALVE SYSTEM CIRCUIT

 Refer to 

P.23A-62

.

.

DIAGNOSTIC FUNCTION

TCM detects abnormal operation of the lockup/select 
switching solenoid valve.

.

DESCRIPTIONS OF MONITOR METHODS

• Specified amount of current is not flown to the 

lockup/select switching solenoid valve because 
of an open or short circuit.

.

MONITOR EXECUTION

• Continuous

.

MONITOR EXECUTION CONDITIONS 
(OTHER MONITOR AND SENSOR)

Other Monitor (There is no temporary DTC stored 

in memory for the item monitored below)

• P0741: Abnormality in lockup function

• P0746: Abnormality in hydraulic control system 

function

• P0841: Abnormality in line pressure sensor func-

tion

Sensor (The sensor below is determined to be 

normal)

• Not applicable

.